Be sure to check the titles since the required book often changes from quarter to quarter.

MATH 51:
Vector Calculus, 3rd Edition by Colley ($70)
Excellent condition

MATH 53:
Differential Equations by Brannan ($140)
Student Solutions Manual to above book ($20)
... The solutions manual gives detailed answers to all odd questions. Most questions assigned aren't odd, but it can be helpful to see how they do similar problems.
Two books together for ($150)
Both in excellent condition

CS 106A:
The Art and Science of Java ($75)
Like new condition

ECON 1A:
Principles of Economics, 6th Edition ($160)
Like new condition

ENGR 50:
Fundamentals of Materials Science and Engineering, 3rd Edition ($100)
Somewhere between excellent and like new condition

ENGR 60:
Fundamentals of Engineering Economics, 2nd Edition ($90)
Excellent condition
I also have the course reader from Winter 2010. So long as you are taking it with Weber the only thing likely to change is the correction of typos. If you want it, I'll throw it in free with the book, otherwise I'll take $5 for it.

IHUM 67, Truth and Morality:
I have all of the books, contact me for more info.

IHUM 11A, Making the Modern World:
I have all of the books, including the course reader from Winter 2010. Contact me for more info.

PWR 1GCW, The Rhetoric of Outrage with Claude Willan:
Contact me if you're taking this class and want to see if the course reader is the same. If so, I'll give it to you for $5 (it was $20 in the bookstore, complete ripoff)